Implantable device with electrical filter

Abstract

An implantable device including a proximal end, a distal end, an elongate electrically conductive component arranged between the proximal end and the distal end, and a contact pole electrically connected to the elongate electrically conductive component. The contact pole is arranged in a region of the distal end to electrically contact bodily tissue adjacent to the contact pole during operation of the implantable device. The elongate electrically conductive component includes a sub-component connected in series with remaining portions of the elongate electrically conductive component. The sub-component includes a capacitive component, an inductive component and a magneto-resistive component, which are arranged to cause a reduction of a resistivity of the magneto-resistive component that leads to a shift of a resonance frequency of the sub-component.

Description

[0001]This application claims the benefit of U.S. Provisional Patent Application 62 / 036,639 filed on 13 Aug. 2014, the specification of which is hereby incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]Field of the Invention[0003]Embodiments of the invention generally relate to a permanently or temporarily implantable device including a proximal end, a distal end, an elongate electrically conductive component arranged therebetween, and a contact pole. In embodiments of the invention, the contact pole is arranged in a region of the distal end of the device to electrically contact bodily tissue adjacent to the contact pole during operation of the implantable device, wherein the contact pole is electrically connected to the elongate electrically conductive component.[0004]Description of the Related Art[0005]Generally, implantable devices, for example electrode lines for electrostimulation, have the disadvantage that their electrical conductor, such as an elongate electr...

AI Technical Summary

Problems solved by technology

Generally, implantable devices, for example electrode lines for electrostimulation, have the disadvantage that their electrical conductor, such as an elongate electrically conductive component, may heat up in an MRI scanner due to the alternating magnetic fields prevailing in the MRI scanner that induce electrical currents in the electrical conductor that are not insignificant.

Therefore, cardiac pacemaker patients nowadays cannot generally be examined in an MRI scanner or may only be examined to a limited extent.

Such function lines, typically, are electrical conductors necessary for the functions of the respective electrode line and as such are exposed to the risk that electrical currents are induced therein as a result of external alternating magnetic fields.

Generally, the currents, for example, may lead to an undesirable heating of the function lines or of the electrode poles connected thereto, or may lead to the delivery of corresponding currents via the electrode poles to surrounding tissue, and therefore to a heating of the surrounding tissue.

In addition, there is the risk that the external fields lead to signal-falsifying interferences.

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